Patent Classification Explorer PCE

DIFF Subgroup

B21C 23/04

by direct extrusion

Introduced: September 1968

Full Title

Extruding metal; Impact extrusion > Making uncoated products > by direct extrusion

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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B21C 23/06 Making sheets IPC+CPC Available in IPC and CPC
B21C 23/08 Making wire, rods or tubes +1 CPC IPC+CPC Available in IPC and CPC
B21C 23/14 Making other products +2 CPC IPC+CPC Available in IPC and CPC